Real Sociedad sports chief Roberto Olabe says they feel well equipped to handle their Champions League campaign.
La Real will face Benfica, Inter Milan and RB Salzburg in the group phase.
Olabe said: "We are a balanced, orderly and versatile group, and this is what we have sought in recent seasons.
"We will face the Champions League with great enthusiasm, we want to continue to be ambitious.
"It's a great opportunity to compete and go as far as possible."